Mobile stand



June 2o, 1961 s. PANTEK m11 2,989,139

' MOBILE' STAND med Aug'. 7, 1959 v s sheets-sheet 1 N n o Q Cb 9) Stan/ey Paniek Ju ia Pan e/r 1N VEN TORS BY WMM@ Fig.

June 20, 1961 s. PANTEK ETAL MOBILE STAND s sheets-sheet 2 Filed Aug. 7, 1959 Sian/ey Ponle/r Jul/'a Pan tek zNVENToRs BY WWW WMM,

Ju'ne 20, 1961 `s; PANTEK ErAL `2,989,139

MOBILE STAND Filed Aug. '7, 1959 v '5 Sheets-Sheet 3 Sian/ey Pan/elf Jul/'a Paniek INV EN TOR S.

2,989,139 MOBILE STAND Stanley Pantek `and Julia Pnntek, both of Lake Pleasant, Attica, Mich. Filed Aug. 7, '1959, Ser. No. 832,289 3 Claims. (Cl. 182"15) This application is a continuation-impart application of U.`S. SerialNo. 745,907led .Tuly l, 1958, and Inow Vabandoned This inventionrelates generally to `scaffolding apparatus and more -particularly to a mobile scaffold or stand especially Adesigned for utilization 'in connection with painting ceilings and the like.

Itis of 'primary concern in connection with this inven- 'tion to provide an easilym'ovable mobile stand assembly 'which is provided vwith a platform which may be readily adjusted to different levelsforjperforming operations overhead `such as painting or the 'like fand wherein the assembly is yprovided with mechanism for moving'the same, under the control of the operator 'without requiring the operator to remove himself from the stand.

A vfurther object of this invention 'is 'to provide improvefmen'ts in mobile Vstand assemblies wherein'the mobile stand ris so constructed and arranged as to be of relatively lightweight to .facilitate movement thereof 'and wherein the stand is provided with operating control mechanisms within easy reach of an .operato-r enabling the operator to manipulate vthe .stand as desired, without `requiring his removal 4from the assembly.

A further object of this invention ists provide an improvedmobile stand assembly essentially comprising upwardly extending converging standards which `define a `generally open cage-like structure. Proper brace means interconnect adjacent standards for Vrigidifying the stand. A `pairof front ground wheels are dependingly supported from -a iirst ,pair ofthe standards while a pair of rear .ground wheels tare dependingly 'supported from a second pair of standards. A 'steering rod extends upwardly, above an adjustable platform `carried by thestandards, from the front pair of wheels for enabling 'an operator on the platform vto steer the assembly. A motivating rod extends upwardly above thepl'atformand is operatively connected with thevpair of .rear wheels `for providing motivation to the stand. A pivotally secured 'ste'p is suspended from the standards Vfor providing easy :access 'to Athe plattform. A brake in the .form 'of .la pair'of spaced plates is provided and passes the `rod connected to the rear wheels. When ,a bolt connecting the two plates is screwed tightly, the plates will come together to .grip the motivating rod so as to prevent movement of the stand. v

These together with other objects and `advantages which will become :subsequently apparent reside inthe details of construction 4and operation as more :fully hereinafter described .and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like pants throughout, and in which:

.FIGURE 1 is an end elevational view of the mobile stand; Y

.FIGURE -2 is a side elevational view partially broken away ofthe mobile stand illustrating thepivotally mounted step in operative position; n

lIi-ICil'IRE 3 is aperspecti-ve view 4of the mobile 'st-and;

FIGURE 4 is an enlarged perspective view of the platform which may be adjustably carried by the upwardly extending converging standards;

FIGURE 5 is an enlarged fragmentary elevational view of a brake utilized to prevent rotation of the motivating rod;

FIGURE 6 is a fragmentary perspective view illustrat- Patented June 20, 1961 ing a utility basket which may be suspended from the mobile stand;

FIGURE 7 is an enlarged fragmentary elevational view partially broken aw-ay illustrating particularly the drive connection between the motivating rod andthe axle;

FIGURE 8 is an enlarged fragmentary perspective view illustrating Vparticularly the steering linkage between the steering rod and the front ground wheels; and

FIGURE 9 is a side elevational View of a modified form of mobile stand.

With continuing reference to the drawings, the numeralI 10 generally represents the mobile stand comprising this invention and initially including upwardly extending converging angle member standards 12, 14, 16 and 18. The vstandar-ds 12 and 14 comprise the front pair of standards while the standards 16 and 18 comprise the rear pair. Structural members 20 Iand '22 are respectively lrigidly connected between the standards 14 and 16 and the standards 1'2 and 18. A structural member 24 rigidly conto the standard 18. Extending parallel to the members 20, 22, 24 and 26 are bottom elements 28 and 30` connecting standards 14 and 16 and standards 12 and 18 together respectively. A member 32 joins standards 12 and 14 while the member 34 joins the rear standards 16 and 18. Diagonal cross braces as 38 extend between the standards to provide .rigidity thereto. It will be `appreciated that the elements so far recited define an open cage-like structure.

Adapted to be `supported by `and between the standards is a platform 40 which preferably has aff-ame portion 42 having spaced slats 44 secured thereto. U-shaped supports 46 are xed to the frame 42 vand receive therethrough the bight portion 48 of U-shaped hangers '50 and l52 respectively. The bight portions 48 are rotatable within the U-shaped members 46. Projecting right angle legs 54 are terminally formed with the bight portion 48. The right angle legs 54 Yare adapted to be selectively received in apertures 56 in each 'of the standards for secur- .ing the platform 40 at the four corners thereof. It will be appreciated that the hangers 50 and 52 must be pivotal vinasmuch as the platform 40 should properly hang within the converging standards. In order to provide `access to the platform 40, astep 58 is pivotally supported between the standards 16 and 18 as spindle portions 60 are received within apertures in the standards. A frame 62 projects below the step 58 `for rigidly and horizontally supporting the step 58. A spring 64 may be provided to urge the step v58 in a counter-clockwise position, as illustrated in FIGURE v42, so v.that when not in use, the step 58 will -be out of the way.

Motivating or drive means and steering means are -provided with the mobile stand for facilitating the utilization thereof. initially, the drive means includes a drive rod 64 which extends upwardly above the platform 40 between a pair of `bearing plates 66 and 68. The plates 66 and 68 are adapted to move 4inwardly 'and outwardly along -a path defined by the guide pin 70, extending perpendicular to each plate. A wing bolt 72 secures the plates 66 Vand 68 together and may be screwed down `tightly so -as to allow 'the plates "66 and 68 to grip the ldrive rod 6'4 to 'prevent rotation thereof. Normally, the wing bolt `72 is loosened to allowrotation 'of the rod 64 by turning eecentrically mounted handle 74. The drive rod 64 terminates in a knuckle member 76 operatively connected to a knuckle member 78 terminating in a bevel gear 80. The bevel gear 80 is operatively engaged with a bevel gear 82 secured to an axle 84 which passes through aligned apertures in the standards 16 and 18. The apertures preferably include bearings 86. Terminally secured to the axle 84 are a pair of rear ground engaging wheels 88 and 90. It should be appreciated that upon turning handle 74, the drive rod 64 may be rotated so as Kto drive the ybevel gear 80 and the rear ground wheelsv 88 and 90 through -the axle 84. If it be desired to prevent rotation of `the drive rod 64, the wing bolt 72 may be screwed so as to draw the plates 66 and 68 together to grip the drive rod 64.

The steering control means include a steering rod 92 which has a handle 94 secured thereto and which extends downwardly adjacent the standard 12. The steering rod 92 extends through aligned apertures in the members 24 and 34 and terminates in a knuckle member 94 which is operatively connected to a knuckle member 96 projecting through bearing 98 secured to a bell crank 100. The bell crank 100 includes a first leg 102 which serves as a spindle and supports a front ground engaging wheel 104 while the second leg of the bell crank 100 is designated as 106 and is pivotally secured as at 108 to a tie rod 110. A second front wheel is designated as 105 and is connected to the tie rod 110 in a manner similar to the wheel 104 and particularly illustrated in FIGURE 8. It will be appreciated that when the handle 94 is turned, the steering rod 92 will rotate and accordingly the bell crank 100 will be turned to the universal joint comprising the knuckle members 94 and 96. The spindle 102 will pivot and carry the rotatably mounted wheel 104 therewith. The tie rod 110 will cause the other front ground wheel 105 to act in conjunction with the wheel 104.

Accordingly, it should now be apparent that the mobile stand is easily motivated by the rotation of the drive rod 64 While it may be easily steered by rotation of the steering rod 92. In order to further enhance the utility of the mobile stand 10, a utility basket as 112 may be suspended between the handles 74 and 94 by hangers as at 114.

In use, the operator need merely kick down the step 58 supported between the standards 16 and 18, and step up to the platform 40. It will of course be appreciated that the platform 40 should be adjusted to the desired height by placing the right angle members 54 of the respective platform hangers in the apertures 56 as desired. When on the platform, the operator need merely rotate the drive rod 64 by means of the handle 74 to turn the axle 84. In order to steer, he need merely turn the handle 94 to in turn rotate the steering rod 92 to direct the movement of the front drive wheels 104 and 105.

If desired, with particular reference to FIGURE 9, a

pair of right angle supporting elements 116 may be suspended from the stand opposed to the standards 16 and 18. Instead of providing the standards 12 and 14 with apertures, the right angle members 116 are provided with apertures which are aligned with the apertures in the standards 16 and 18. By doing this, the eiect of the convergence of the standards is eliminated and a pin may then be inserted between the pair of right angle members 116. The pin is designated generally by the numeral 118 and it will be appreciated that the step 40 rests on the pin 118 and is also supported below by the hanger S0 in the manner above indicated. The smaller leg 120 of the right angle members 116 may be bridged by a step so as to eliminate the necessity of utilizing the pivotally mounted step 58 as indicated above.

It will be appreciated that regardless of which of the two forms of the invention are utilized, the mobile stand is versatile, dependable, and structurally sound. It facilitates such operations as ceiling painting, wallpaper hanging, etc.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled n the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. A mobile stand comprising converging standards deiining a generally open cage-like structure larger in cross section at the bottom than at the top, brace means interconnecting adjacent standards, a pair of front and a pair of rear ground engaging wheels mounted on the bottom of said structure, each of said standards having a plurality of vertically spaced apertures therein, a platform positioned within said cage-like structure, and a plurality of hooks pivotally connected to said platform and extending upwardly therefrom, each of said hooks extending through one of said apertures in the standard adjacent thereto to adjustably support the platform within the cage-like structure at a preselected elevation whereby the platform can be supported on the standards at any one of a number of different elevations despite the fact that the standards converge so that they are spaced different distances apart at each elevation at which the platform can be supported.

2. The invention as defined in claim 1including a step pivotally mounted on said cage-like structure beneath said platform, said step having a supporting member extending from the under side of the pivoting end thereof in position to rest on the ground when said step is pivoted to a rst position, and spring means for normally pivoting said step to a second position wherein said supporting member does not contact the ground, said supporting member enabling the step to carry the weight of a person and act as a brake to prevent rolling of the cage-like structure on said wheels when the step is in said first position, and when the step is in said second position the supporting member clears the ground so as not to interfere with the movement of the structure.

3. 'I'he invention as defined in claim 1 including drive control means mounted on the front of said cage-like structure on one side thereof and above said platform, steering control means mounted on the front of said structure on the other side thereof and above said platform, shaft means extending down said one side of the structure for operatively connecting said drive control means to one of said pairs of wheels to drive said structure, and shaft means extending down said other side of the structure for operatively connecting said steering control means to the other of said pairs of wheels toV steer the structure.

References Cited in the tile of this patent UNITED STATES PATENTS 337,940 Emons Mar. 16.1886 714,849 wynn Dec. 2, 1902 890,986 Jones June 16, 1908 2,237,688 Phillips Apr. 8, 1941 2,506,860 Dimon May 9. o 2,653,036 crea sept. 22, 1953 FOREIGN PATENTS 25.380 France oet. 24, 1922 

